Saturday, October 4, 2025

1969 Ford Mustang Boss 429 Fastback - $247k


This vehicle has been donated by the seller with proceeds to benefit the Tulsa Community Foundation.
KK no. 2011. Highly original condition. 859 Boss 429 Mustangs were produced in 1969. Boss 429 CI V-8 engine. Holley 4-barrel 735 CFM carburetor. Aluminum intake manifold. Semi-hemispherical combustion chamber. Four-bolt main caps. Forged steel crank and connecting rods. 4-speed manual transmission with Hurst shifter. 3.91 Traction-Lok differential. Candy Apple Red exterior.
The Boss 429 was created to homologate Ford's new 429 CI V-8 engine for NASCAR racing. With more than 7.0 liters of V-8 power, and a 3.91:1 rear axle, the 1969 Ford Mustang Boss 429 is a tire-destroying behemoth. Engine was a jaw dropping $1,200. Mandatory options included a four-speed ($254) and a 3.91:1 Traction-Lok ($64). An oil cooler, trunk-mounted battery, beefed suspension with front and rear stabilizer bars, Polyglas F60X15s, quicker power steering, and power front discs rounded out the required. Air conditioning and automatic transmission were forbidden.
The powerplant was laughably rated at 375 hp. Real output was closer to 500 hp. To meet emissions regulations, a mild cam was fitted with a smog pump and small carburetor. With a few modifications up to 600 bhp was common.
Kar Kraft No. 2011 appears at Mecum Indy Here. Hagerty suggests a concours 1969 Ford Mustang Boss 429 Fastback is trending around $450k.

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